Engaging micro-budget horror flick is effective until you leave the theater

Katie (Katie Featherston) and Micah (Micah Sloat) have a perfectly anonymous and quite ordinary life, but there's also an 800-pound gorilla (metaphysical/meta-spiritual, if you will) that's taking over their lives. It seems Katie is haunted by a ghost that over the course of their videotaped misadventures in 'Paranormal Activity' escalates into a full-blown catastrophe, based on the poor choices couples like Katie and Micah make both in films and in everyday life. Grade: C.